Microstructure and mechanical characterization of a friction-stir-welded C18150 butt joint

被引：0
|
作者：
He D. [1 ,2 ]
Xue F. [2 ]
Sun Y. [1 ]
机构：
[1] College of Light Alloy Research, Central South University, Changsha
[2] State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha
来源：
Hanjie Xuebao/Transactions of the China Welding Institution | 2019年 / 40卷 / 11期
关键词：
Coarse particles; Cr precipitates; Cu-Cr-Zr alloy; Micro-hardness; Tensile strength;
D O I：
10.12073/j.hjxb.2019400294
中图分类号：
学科分类号：
摘要：
In this study, the Cu-Cr-Zr alloy was welded by means of friction stir welding. Particularly, the microstructure of joints was observed by Metalloscope, SEM and Electron backscatter diffraction (EBSD). The mechanical properties were investigated by tension test and micro-hardness test. The result shows that the final grain structure in the nugget zone is composed of grains in state of dynamic recrystallization and partial dynamic recovery. The dynamic recrystallization process is a continuous dynamic recrystallization process. Coarse particles which are 5 ~ 10 μm in length are found innugget zone of Cu-Cr-Zr. The EDS analysis further reveals that these coarse particles are mainly composed of Cr element. All these precipitates are dissolved due to the high temperature in the nugget zone of Cu-Cr-Zr. The micro-hardness and tensile strength of nugget zone decreased due to the dissolution of precipitates. © 2019, Editorial Board of Transactions of the China Welding Institution, Magazine Agency Welding. All right reserved.
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页码：93 / 99
页数：6
相关论文
共 13 条
  • [1] Mishnev R., Shakhova I., Belyakov A., Et al., Deformation microstructures, strengthening mechanisms, and electrical conductivity in a Cu-Cr-Zr alloy, Materials Science and Engineering: A, 629, pp. 29-40, (2015)
  • [2] Shen J.J., Liu H.J., Cui F., Effect of welding speed on microstructure and mechanical properties of friction stir welded copper, Materials & Design, 31, pp. 3937-3942, (2010)
  • [3] Zhang L.J., Bai Q.L., Ning J., Et al., A comparative study on the microstructure and properties of copper joint between MIG welding and laser-MIG hybrid welding, Materials & Design, 110, pp. 35-50, (2016)
  • [4] Kanigalpula P.K.C., Pratihar D.K., Jha M.N., Et al., Experimental investigations, input-output modeling and optimization for electron beam welding of Cu-Cr-Zr alloy plates, The International Journal of Advanced Manufacturing Technology, 85, pp. 711-726, (2015)
  • [5] Qiao K., Wang W., Wu N., Et al., Research on microstructure and property of friction stir welding joint of Al/Cu clad plates, Materials Review, 30, 12, pp. 86-89, (2016)
  • [6] Azizi A., Barenji R.V., Barenji A.V., Et al., Microstructure and mechanical properties of friction stir welded thick pure copper plates, The International Journal of Advanced Manufacturing Technology, 86, pp. 1985-1995, (2016)
  • [7] Sahlot P., Jha K., Dey G.K., Et al., Quantitative wear analysis of H13 steel tool during friction stir welding of Cu-0.8%Cr-0.1%Zr alloy, Wear, 378-379, pp. 82-89, (2017)
  • [8] Jha K., Kumar S., Nachiket K., Et al., Friction stir welding (FSW) of aged CuCrZr alloy plates, Metallurgical and Materials Transactions A, 49, pp. 223-234, (2017)
  • [9] Lai R., He D., He G., Et al., Study of the microstructure evolution and properties response of a friction-stir-welded copper-chromium-zirconium alloy, Metals, 7, (2017)
  • [10] Huang K., Loge R.E., A review of dynamic recrystallization phenomena in metallic material, Materials & Design, 111, pp. 548-574, (2016)
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